Dyfyniad APA

Derrick, W. R., & Grossman, S. I. (1997). Elementary differential equations (4th.ed.). Addison-Wesley.

Dyfyniad Arddull Chicago

Derrick, William R., and Stanley I. Grossman. Elementary Differential Equations. 4th.ed. Massachusetts: Addison-Wesley, 1997.

Dyfyniad MLA

Derrick, William R., and Stanley I. Grossman. Elementary Differential Equations. 4th.ed. Addison-Wesley, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.